Insole

ABSTRACT

An insole includes a supporting layer, a buffer unit, a cloth layer, a foam layer and a leather layer orderly superposed together. The supporting layer is formed with an intermediate portion, an arch portion and a heel portion for corresponding with the sole of a person&#39;s foot. The buffer unit consists of a first buffer material to be combined with the arch portion and a second buffer material to be engaged with the heel portion. By so designing, the intermediate portion, the arch portion and the heel portion of the supporting layer of the insole can correct and support a user&#39;s foot, and the buffer unit can produce effects of shock absorption and buffering. In short, the insole of this invention is not only able to correct a user&#39;s foot shape but also comfortable in wearing.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to an insole, particularly to one used for correction of a user's foot shape.

2. Description of the Prior Art

In recent years, many kinds of corrective insoles have been developed for the purpose of solving the problem that most modern people suffer from indisposition of foot, and one common characteristic of such a conventional insole is that the main body of the insole is made of hard plastic material and the main body has one side bent to form a supporting portion to correspond with the arch of a person's foot. Thus, after the conventional corrective insole is set in a shoe to be worn, the supporting portion of the insole can support the arch of a foot and can further correct a user's foot shape to have the center of gravity of the foot transferred to an ankle, able to greatly lower the burden of the foot.

However, when the conventional corrective insole is used, a user's foot is directly pressed on the supporting portion of the insole, letting pressure concentrated on the supporting portion; therefore, the conventional corrective insole is apt to make a user produce foreign matter sensation and feel uncomfortable and hence criticized severely by the user. In addition, since the main body of the conventional corrective insole is made of hard plastic material; therefore, when used, the corrective insole is likely to slide in the shoe.

SUMMARY OF THE INVENTION

A first object of this invention is to offer an insole able to correct a user's foot shape and comfortable in wearing.

A second object of this invention is to offer an insole having an anti-skid effect for preventing the insole from sliding in a shoe.

The insole in the present invention includes a supporting layer, a buffer unit, a cloth layer, a foam layer and a leather layer combined together. The supporting layer is bent to form a curved surface for corresponding with the sole of a person's foot, formed with an intermediate portion, an arch portion and a heel portion, and the intermediate portion is provided with a bulgy block and the heel portion is bored with an insert hole passing through both the topside and the underside of the supporting layer. The buffer unit is positioned on the supporting layer, consisting of a first buffer material to be combined with the arch portion and a second buffer material to be engaged in the insert hole of the supporting layer. The cloth layer is superposed on the buffer unit, the foam layer is superposed on the cloth layer, and the leather layer is superposed on the foam layer.

The second buffer material has its lower side protruding out of the insert hole and positioned lower than the underside of the supporting layer for preventing the insole from sliding in a shoe.

After the insole of this invention is set in a shoe to be worn, the intermediate portion, the arch portion and the heel portion of the supporting layer can respectively and effectively support the middle, the arch and the heel of the user's foot for correcting the user's foot shape and having the center of gravity of a foot transferred to an ankle, able to greatly lower the burden of the foot. Further, the buffer unit is able to produce effects of shock absorption and buffering to both the arch portion and the heel portion, which receive comparatively great stress and able to eliminate foreign body sensation produced by the supporting layer, enabling the insole to carry out correction of a user's foot shape and comfortable in wearing. Furthermore, since the second buffer material has a lower side protruding out of the insert hole and positioned lower than the underside of the supporting layer; therefore, when the insole is put in a shoe, the lower side of the second buffer material will be closely stuck to the inner wall of the shoe for preventing the supporting layer from sliding in the shoe.

BRIEF DESCRIPTION OF DRAWINGS

This invention will be better understood by referring to the accompanying drawings, wherein:

FIG. 1 is a perspective view of a first preferred embodiment of an insole in the present invention;

FIG. 2 is an exploded perspective view of the first preferred embodiment of an insole in the present invention;

FIG. 3 is a cross-sectional view of the line 3-3 in FIG. 1;

FIG. 4 is a cross-sectional view of the line 4-4 in FIG. 1;

FIG. 5 is a cross-sectional view of the line 5-5 in FIG. 1;

FIG. 6 is schematic view of the first preferred embodiment of the insole in a using condition in the present invention; and

FIG. 7 is an exploded perspective view of a second preferred embodiment of an insole in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

A first preferred embodiment of an insole 100 in the present invention, as shown in FIGS. 1-5, includes a supporting layer 10, a buffer unit 20, a cloth layer 30, a foam layer 40 and a leather layer 50 as main components combined together.

The supporting layer 10 made of nylon is bent into a curved surface for corresponding with the sole of a person's foot and formed with an intermediate portion 11, an arch portion 12 and a heel portion 13. The intermediate portion 11 is provided with a bulgy block 14, while the heel portion 13 is bored with an insert hole 15 passing through both the topside and the underside of the supporting layer 10.

The buffer unit 20 superposed on the topside of the supporting layer 10 is composed of a first buffer material 21 to be combined with the arch portion 12, and a second buffer material 22 to be engaged in the insert hole 15 of the heel portion 13. The first buffer material 21 is made of emulsion while the second buffer material 22 is made of thermoplastic polyurethane (TPU). The second buffer material 22 has its lower side protruding out of the insert hole 15 and positioned lower than the underside of the supporting layer 10 and is disposed with a plurality of anti-skid recesses 221, further having its circumferential side provided with a flange 222 larger than the insert hole 15 in diameter to resist the topside of the supporting layer 10 for restrictedly positioning the second buffer material 22 in the insert hole 15.

The cloth layer 30 made of fine-grained cloth is superposed on the buffer unit 20.

The foam layer 40 made of emulsion is superposed on the cloth layer 30.

The leather layer 50 made of leather is superposed on the foam layer 40.

In using, referring to FIG. 6, since the supporting layer 10 of the insole 100 is bent into a curved surface for corresponding with the sole of a person's foot; therefore, after the insole 100 is set in a shoe 100 for use, the intermediate portion 11, the arch portion 12 and the heel portion 13 of the supporting layer 10 of the insole 100 can respectively and effectively support the middle, the arch and the heel of a user's foot to correct the user's foot shape and have the center of gravity of the foot transferred to the ankle, able to greatly reduce the burden of the foot. At the same time, the buffer unit 20 can produce marked effects of shock absorption and buffering to both the arch portion 12 and the heel portion 13, which bear comparatively great stress, able to get rid of foreign body sensation produced by the supporting layer 10. Thus, the insole of this invention not only has a function of correcting a user's foot shape but also is comfortable in wearing.

One special feature of the invention is that the second buffer material 22 has its lower side protruding out of the insert hole 15 and positioned lower than the underside of the supporting layer 10; therefore, when the insole 100 is set in a shoe 200, the lower side of the second buffer material 22 will closely attached to the inner wall of the shoe 200 to prevent the supporting layer 10 from sliding in the shoe 200, and the anti-skid recesses 221 provided at the underside of the second buffer material 22 can further elevate anti-skid effect.

Another special feature of this invention is that the foam layer 40 is able to produce effects of shock absorption and buffering and, being superposed on the cloth layer 30 that offers a tensile effect, the foam layer 40 can avoid being damaged due to long-term treading by a user. In addition, being sandwiched between the cloth layer 30 and the leather layer 50, the foam lay 40 can prevent the right side and the reverse side from being worn off.

A second preferred embodiment of an insole in the present invention, as shown in FIG. 7 has almost the same structure as that described in the first preferred embodiment, except that the cloth layer 30 is bored with a plurality of first ventilating holes 31, and the foam layer 40 is bored with second ventilating holes 41 corresponding with the first ventilating holes 31. Thus, the insole 100 of this invention can be worn with great comfort via the first and the second ventilating holes 31.

While the preferred embodiments of the invention have been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention. 

What is claimed is:
 1. An insole comprising: a supporting layer bent into a curved surface for corresponding with a sole of a person's foot, said supporting layer formed with an intermediate portion, an arch portion and a heel portion, said intermediate portion provided with a bulgy block, said heel portion bored with an insert hole passing through a topside and an underside of said supporting layer; a buffer unit positioned on a topside of said supporting layer, said buffer unit composed of a first buffer material and a second buffer material, said first buffer material combined with said arch portion, said second buffer material engaged in said insert hole of said supporting layer; a cloth layer superposed on said buffer unit; a foam layer superposed on said cloth layer; and a leather layer superposed on said foam layer.
 2. The insole as claimed in claim 1, wherein said second buffer material has a lower side protruding out of said insert hole and positioned lower than an underside of said supporting layer.
 3. The insole as claimed in claim 1, wherein said second buffer material has an underside provided with a plurality of anti-skid recesses.
 4. The insole as claimed in claim 1, wherein said second buffer material has a circumferential side formed with a flange that is larger than said insert hole in diameter, said flange resisting against a topside of said supporting layer.
 5. The insole as claimed in claim 1, wherein said supporting layer is made of nylon.
 6. The insole as claimed in claim 1, wherein said first buffer material is made of emulsion while said second buffer material is made of thermoplastic polyurethane (TPU).
 7. The insole as claimed in claim 1, wherein said cloth layer is made of fine-grained cloth.
 8. The insole as claimed in claim 1, wherein said foam layer is made of emulsion.
 9. The insole as claimed in claim 1, wherein said leather layer is made of leather.
 10. The insole as claimed in claim 1, wherein said cloth layer is bored with a plurality of first ventilating holes, while said foam layer is bored with a plurality of second ventilating holes. 